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GEOSCIENCE will attend one Ar"onstruction meeting
<br />With.tho selected Contractor and City personnel toreview
<br />IM Issue$ Within the contract documents and technical
<br />Specifications. In addition,qUasoAno will 46 addressed
<br />regarding hydrageologio arid jogst!qaI matters. itamsto be
<br />discussed at the moeting Will include ftt not be limited to)
<br />required submittals and Inspections, permitting, discharge
<br />100m, Work.schadule, Invoicing, and cor.wUhIOg#QA
<br />prat000l[6. Additions ll� at the #rne Of the 6*06Wi�uotlon
<br />'meeting, the 13YOSP00WO Comfebt6f will have. the
<br />Opportunity to visit the Well site to satisfy themselves
<br />regarding oDndMoha that Inay affect equIprrientest up.
<br />At the tinloof the meeting, the Contraotorwill be* thd�
<br />00000tUnItY to Point out any issues that they
<br />May have
<br />regard! ftgPrePara0Ol1 'Of 010, OM f0rlha Work. Q EOSCIENCE
<br />will 0000481lb COnOTOW activities pHor.to mobilization,
<br />This wijl include varif
<br />. Yin$ that the 06ntraotor has provided
<br />all bubmittals required by the technical specifications
<br />and that OqUIPMent-0011vared to." site m6ots we
<br />'raquirements of the speollioadont. it is assume
<br />, dthatall
<br />rehabilitation work will be bid. under one contract and that
<br />attendance at only One Pfe-ebiletruction mestingforthis
<br />Phase Will be nocessary.
<br />3. Technical Plans and Specifloations
<br />GEOSCIENM will prepare detailed technical Plans end
<br />.specificat1=9 for the rehabilitation of the City Well based
<br />on observations obtained in Phase 1, Including a detailed
<br />bid schedule with spedfic. Uns Items allowing units and
<br />unit quantities for the work. Items included In the technical
<br />apefoilfloations will Include (but are not limited to) the
<br />following:;
<br />• Well location, depth, dimensions, and materlals;
<br />• Permits and regulatory requiramentr
<br />• Compliance with discharge requirements (as
<br />necessary);
<br />• Job conditions (e.g., noise suppression, waste
<br />materials, runoff management, POWar, Ughting, water,
<br />security, sanitation, parking, traffic control, and work
<br />damage);
<br />• Mobilization, demobilization, clearing, grubbing, and
<br />alto cleanup;
<br />• Equipment, materials, and records to be furnished by
<br />the Contractor;
<br />Records to be kept by the Contractor,
<br />• Well repair byawagIng,
<br />• Well cleaning by brushing and balling,
<br />o Well cleaning by chemical Injection;
<br />, Wall redevelopment by airlifting and swabbing;
<br />• Well redevelopment by pumping and surging;
<br />• Aquifer Pumping and recovaty. test protocol.,
<br />• rlowmetersutwy;
<br />• Meld ground water quality Monitoring protocol:
<br />• Ground water-sampung protocol;
<br />• POW011abilltation 'dual-cam4 downhole video survey,
<br />anj
<br />• Final well disinfection.
<br />PEOSCIIENCE Will submit an electronic copy 0 0 1%)%
<br />DRAFt version of the technical plans* end spa , olficationato
<br />the City fbr M(W and comment, Comments to the draft
<br />'Will be incorporated and GEMCIENCE will submit,one (1)
<br />electronic MPYWtheft(S) bound hard copies of tb�
<br />166% FINAL technical specifications,
<br />Wall Modifloation by awning
<br />It any damage to the Well caoing 06crtorean Is observed
<br />from thO 40011010 video bu . rft. it may be necossaryto
<br />IlWag a Patch to stabilize filtarpack and formation material
<br />frWantDift the well during operation,, if this is deemed
<br />necessary, GEOSCIENCE will provim fulvtfine Inspection
<br />whileany patches or repair$ ate made.
<br />b. Initial Brushing and Bailing of Well Casingand Screen
<br />A vigorous mechanical brushing Procedure should be
<br />WnPlOnlontod to loosen and dislodge a maximum Mount
<br />Of Sitfifeft encrustation and/or bioloutbig materials,
<br />GE0801MCE will provide part-timeirterieWory during
<br />brushing and ballingof the Well to monitor the progress
<br />of the task and to ensure that the proper methods and
<br />equipment are employed, GEOSOIENCE will provide
<br />direction to Contractor regarding prot;I0111 areas of the well
<br />screen that may require additional work�,
<br />c. Chemical Rehabilitation
<br />Following mechanical rehabilitation, the well should
<br />undergo chemical cleaningto remove blefilm produced
<br />by bacteria, clays and fine-grained sediments, as well
<br />as assisting in removing biological and mineral deposits
<br />that May be cloggingthe Peribrattons. and near -well zone.
<br />The exact nature of the chemicals to be used shall be
<br />recommended based on the results of the downhole video
<br />survey (Phase 1) end review of the wells water chemistry,
<br />GEOSCIENCE will provide full-time Inspection during,mIxing
<br />and aPPIloationof the chemical mixture to ensure proper
<br />chemical concentrations end proper dispersal throughout
<br />the well Qasing and screen.
<br />d. Initial Redevelopment by Swabbing and Airlifting
<br />25E-449
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